13) The half-life of C-14 is 5730 years and the decay is 1 order. If you start with 500 mg if this sample, how long will it be before you end up with only 125 mg? 14) Balance the following Nuclear reactions: a) 210Po → ? + 'He b) 234Pa → ? c) Uranium-235 undergoes an alpha radiation. Write the balanced nuclear reaction and identify the daughter particle. -1°e

Q: The following exercise poses a question that can be answered by solving an equation. Give the…

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Q: The half life for the decay of carbon-14 is 5.73 × 10’ years. Suppose the activity due to the…

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Q: If pure polonium-210 (k = 5.02 x 10-3 day-1) were used in a crime, based on radioactive…

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Q: if the passing of five half -life leaves 50.0g of a of radioisotope sample, how much was present in…

A: Mass of sample after 5 half life = 50 g Initial amount = ?

Q: Determine the half-life of a radionuclide if after 18 days the fraction of undecayed nuclides…

A: Half-life (t1/2) represents the amount of time at which the concentration of the radioactive nuclide…

Q: Hi, please help with this questions attached. Especially 1b, and number 2 and 3 thank you, Janet.

A: Hey, since there are multiple questions posted, we will answer first question (1b). If you want any…

Q: A sample of F-18 has an initial decay rate of 1.5 * 105 dis>s. Howlong will it take for the decay…

A: The given data contains, initial rate A0 = 1.5×105 dis s-1Final rate A=2.5×103 dis s-1 t1/2 = 1.83…

Q: A rock contains 0.257 mg of Pb-206 for every milligram of U-238.The half-life for the decay of U-238…

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Q: You take a course in archaeology that includes field work. An ancient wooden totem pole is excavated…

A: Given: The beta decay rate is measured at = 690 decays/min. sample from the totem pole contains =…

Q: Answer the following questions regarding the radioactive isotope polonium-210. A.Write a nuclear…

A: Since. Your question has multiple subparts. We will solve only the first three sub-parts to get the…

Q: Uranium-240 has a half-life of 14.1 hours (note this is NOT a fissionable isotope).  A country with…

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Q: a) If an object that was once living died 35,500 years ago, what is the exact percentage of the 14C…

A: a. The half life equation for decay is shown below: Where; Cfinal represents final concentration…

Q: Exactly 0.1 of the radioactive nuclei in a sample decay perhour. Thus, after nhours, the fraction of…

A: (0.900)n = 0.5 taking lag of both side  n x log 0.900  = log 0.5 n = log 0.5 /log 0.9 n  = 6.58 hour…

Q: 10.4. Write the balanced equations for the following nuclear reactions: c) 23U + ¿n→4? d) 32U + -{ß…

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Q: A freshly purified 2.00 g sample of the alpha particle emitting radionuclide 244 Am is prepared then…

A: Mass of radionuclide = 2.00 gVolume of evacuated container = 0.100 LTemperature = 25 °CPressure =…

Q: Answer the following questions regarding the radioactive isotope polonium-210 A.Write a nuclear…

A: Since. Your question has multiple subparts. We will solve only the first three sub-parts to get the…

Q: Answer the following questions regarding the radioactive isotope polonium-210 C.A rock obtained by…

A: C) Determination of no. of half lives: Thus 3 half lives have been elapsed.

Q: Prove that t½ = t ln (2)/ln(No/Nt) determines the half-life of a 30-g sample of  Pu-239 which is…

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Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137…

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Q: Which of the following nuclear reactions is INCORRECTLY categorized? Select one: O a. "N + a - "O +…

A: The nuclear reaction which incorrect is given below.

Q: NUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

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Q: What is the half-life of uranium-234 if 4.49×10° years are required for the activity of a sample of…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 7.10 mg to 5.20 mg…

A: Radioactive decays are first order reactions. Since we know that the relationship between the amount…

Q: Write 20 balanced nuclear equation (natural transmutation) of radioactive elements from U-238 to…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.50 mg to 2.40 mg…

A: Radioactive decay is a first-order reaction. On applying the value for rate constant k, we find it…

Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137…

A: Concept based on half-life of radio active isotopes.

Q: A patient is given 1.11 ug of a radioactive isotope with a half-life of 3.13 hours. How many hours…

A: (a). Given: The initial amount of the radioactive isotope, [A0] = 1.11 μg The remaining amount of…

Q: 1. After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A sample of a wooden artifact gives 5.0 disintegrations/min/g carbon. The half-life of C-14 is 5730…

A: Half life is defined as the time taken by a radioactive sample to decay to half of its original…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 7.40 mg to 4.60 mg…

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Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) If the…

A: We have to used equation of first order rate constant. As we know nuclear reaction follows first…

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) what is…

A: To answer questions regarding I-131 nucleus.

Q: Suppose a sodium-22 nuclide decays into a neon-22 nuclide by emitting a positron. Complete the…

A: Given Atomic Number of sodium = 11 Atomic mass of sodium      = 22 Nuclear reaction =?

Q: Carbon-10 is an unstable isotope with an atomic mass of 10.016853 u. It undergoes beta-plus decay…

A: The total binding energy of an atom is the sum of energy that is emitted as the atom is created by…

Q: On April 26, 1986, an explosion at the nuclear power plant at Chernobyl Ukraine, released the…

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Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: Since the decay reactions are first order. Hence half life = ln(2) / K  where K = decay constant…

Q: Radium-226 (atomic mass - 226.03), the only naturally occurring isotope of this element, follows the…

A: Since the half-life of the 2nd and 3rd decay are very small in comparison to the 1st one, the 2nd…

Q: For the nuclear reaction 0.je + 110 48Cd 110 47Ag → Starting with 200. g of Ag-110 in a container,…

A: No of half lives in 756 days are 3. And mass left of reactant is 25 g

Q: 12 I 3 LIA IIS O1 6 ICON D. Insert the appropriate nuclear symbols to balance the equations for the…

A: A. 8O18 + 1H1 = 0n1 + X  Total mass and atomic number of reactants = (18+1) = 19 and (8+1) = 9…

Q: If 25%(1/4)of a radioactive element remains after1,000years, what is the half-life?

A: Radioactive elements are those elements whose nuclei are highly unstable and hence undergo…

Q: The half-life of strontium−90 is 29.1 years. Calculate the radioactivity in millicuries of 11.5 mg…

A: Given, Half life of strontium, t1/2 = 29.1 yr Mass of strontium = 11.5 mg = 0.0115 g    (1 mg =…

Q: Cesium 137 is a commonly used isotope in the treatment of some cancers, someone you know may have…

A: The reactant given is Cesium 137 i.e 13755Cs.

Q: A decay sequence for a radioactive atom of radon 219 to stable lead 207 atom is as shown below.…

A: Radioactive deacy is the spontaneous breakdown of atomic nucleus from nucleus and release energy and…

Q: Write down four main differences between artificial and natural radioactivity. In a nuclear…

A: As you have yourself asked for first three question, the answers are as follows-   Also some…

Q: 4. The remnants of an ancient fire in a cave in Africa showed a 'C decay rate of 3.9 counts per…

A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: a. i. The half-life of 20 kg of Bismuth -210 is 20 minutes. Explain this statement? ii. A…

A: The half-life of 20 kg of Bismuth -210 is 20 minutes means after every 20mints the concentration of…

Q: A decay series starts with the synthetic isotope 23992U. Thefirst four steps are emissions of a β-…

A: The decay series of 23992U goes through two emissions of beta particles and two emissions of alpha…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.